Review on Keyless Ignition CWTWB1U331 GQ43VT11T CWTWB1U345 Car & Vehicle Electronics and Car Electronics by Mark Green

The remote works great and is programmed exactly as described. However, the key MUST be programmed by a mechanic, even if you already have a second key stored in the car's computer. It cannot be cloned from key #1 or key #2. After you cut the key as if it were a "dumb" key with no chip, an additional key MUST be programmed into your car or truck's CPU for that key to work (i.e. usually as a #3 key). This programming cannot be done by a key manufacturer or locksmith. You will need a mechanic to add this for you (unless you are a mechanic) or this key will not work.